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Three identical cells of emf 4V with 1Om...

Three identical cells of emf 4V with `1Omega` internal resistance each are connected in series to an external resistance of `6Omega`. Find the current flowing in the circuit.

Text Solution

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Total or effective emf `mE=3xx4V=12V`
Total or effective internal resistance mr
`=3xx1Omega=3Omega`
External resistance `R=6Omega`
`:." Current I"=("effective emf")/("total resistance")`
`I=(mE)/(mr+R)=(12V)/(3Omega+6Omega)=(12V)/(Omega)`
Current `I=1.33A`
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